Chain Lightning

You create a bolt of lightning that arcs toward a target of your choice that you can see within range of the spell. Then, three bolts leap from the target to up to three other targets, each of which must be within 30 feet of the first. A target can be a creature or an object and can be struck by only one of the bolts. The target must make a Constitution saving throw. The target takes 10d8 plasma damage on a failure, or half the damage on a success.

At Higher Levels. When you cast this spell by spending Mana points equal to a 7th-level spell or higher, one additional bolt leaps from the first target to another target, for each spell level above 6th.